Laser & Optoelectronics Progress, Volume. 57, Issue 15, 152301(2020)
Theoretical Analysis of Evanescent Mode Resonance Frequency in a T-Shaped Cavity of the Terahertz Parallel-Plate Metal Waveguide
Based on electromagnetic theory and related research, a fitting formula for calculating the resonant frequency of the evanescent mode of a T-cavity terahertz parallel-plate waveguide is proposed. The resonant frequency of the evanescent mode under different parameters is studied using the fitting formula and COMSOL software. Experimental results show that the results obtained by the two methods are in good agreement, and the relative deviation does not exceed 0.3%. The fitting formula provides a fast and simple calculation method that can accurately obtain the resonance frequency of the evanescent mode.
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Qiong Wu, Huifang Zhang, Qing Cao, Kai Wang, Chaoyue Li, Ying He, Yan Wang, Xuemei Su. Theoretical Analysis of Evanescent Mode Resonance Frequency in a T-Shaped Cavity of the Terahertz Parallel-Plate Metal Waveguide[J]. Laser & Optoelectronics Progress, 2020, 57(15): 152301
Category: Optical Devices
Received: Oct. 21, 2019
Accepted: Nov. 26, 2019
Published Online: Aug. 4, 2020
The Author Email: Zhang Huifang (hfzhang1967@shu.edu.cn), Cao Qing (qcao@shu.edu.cn)